Answer: 3.87132498658 in other words 3.871
Step-by-step explanation:
.4 is smallest, 1/2 , then 60% is greatest.
For this case we propose a system of equations. We have to:
x: Let the variable that represents the number of dimes
y: Let the variable that represents the number of quaters
We know that:
One dime equals 10 cents, $0.10
A quater equals 0.25 cents, $0.25
According to the statement we have:

We multiply the first equation by -0.10:

We have the following equivalent system:

We add the equations:

Approximately 3 quater coins

And two dimes
Answer:
3 quater
2 dimes
First, distribute the 12
156-168-15=16+4+x
-27=20+x
-47=x